Sarah Collins is haunted by the unsolved murder of her twin sister, Emily, ten years ago. When a series of eerily similar killings start occurring in her city, Sarah becomes convinced that the killer is targeting her. As she delves deeper into the case, she uncovers a web of secrets that lead her to suspect someone close to her might be involved. Racing against time, Sarah must confront her own past traumas while trying to catch a ruthless killer before they strike again. But the closer she gets to the truth, the more dangerous the game becomes, and Sarah realizes she may be in over her head.